Organic light-emitting device, display apparatus, photoelectric conversion apparatus, and electronic apparatus

Abstract

An organic light-emitting device includes, on an insulating layer, a first lower electrode, an upper electrode, and an organic compound layer disposed between the first lower electrode and the upper electrode, wherein the organic compound layer includes a first light-emitting layer, a second light-emitting layer disposed between the first light-emitting layer and the upper electrode, and a first organic compound layer disposed between the first light-emitting layer and the second light-emitting layer, the first organic compound layer includes a second organic compound layer containing an alkali metal, and a third organic compound layer disposed between the second organic compound layer and the upper electrode and containing a compound having a lowest unoccupied molecular orbital level energy of −5.0 eV or less, and an orthogonal projection of the first organic compound layer onto the insulating layer is smaller than an orthogonal projection of the first light-emitting layer onto the insulating layer.

What is claimed is: 
     
       1. An organic light-emitting device comprising, on an insulating layer, a first lower electrode, an upper electrode, and an organic compound layer disposed between the first lower electrode and the upper electrode,
 wherein the organic compound layer includes a first light-emitting layer, a second light-emitting layer disposed between the first light-emitting layer and the upper electrode, and a first organic compound layer disposed between the first light-emitting layer and the second light-emitting layer, 
 the first organic compound layer includes a second organic compound layer containing an alkali metal, and a third organic compound layer disposed between the second organic compound layer and the upper electrode and containing a compound having a lowest unoccupied molecular orbital level energy of −5.0 eV or less, and 
 an orthogonal projection of an entirety of the first organic compound layer onto the insulating layer is smaller than an orthogonal projection of an entirety of the first light-emitting layer onto the insulating layer. 
 
     
     
       2. The organic light-emitting device according to  claim 1 , further comprising a second lower electrode disposed between the insulating layer and the organic compound layer,
 wherein the orthogonal projection of the first light-emitting layer onto the insulating layer overlaps an orthogonal projection of the second lower electrode onto the insulating layer, and 
 the orthogonal projection of the first organic compound layer onto the insulating layer does not overlap the orthogonal projection of the second lower electrode onto the insulating layer. 
 
     
     
       3. The organic light-emitting device according to  claim 1 , further comprising a pixel isolation layer covering an edge of the first lower electrode, wherein the first lower electrode includes a first region in contact with the organic compound layer and a second region in contact with the pixel isolation layer, and
 the orthogonal projection of the first organic compound layer onto the insulating layer is smaller than an orthogonal projection of the first region onto the insulating layer. 
 
     
     
       4. The organic light-emitting device according to  claim 3 , wherein an orthogonal projection of the third organic compound layer onto the insulating layer is smaller than the orthogonal projection of the first region onto the insulating layer. 
     
     
       5. The organic light-emitting device according to  claim 1 , further comprising an optical member on the upper electrode, wherein the orthogonal projection of the first organic compound layer onto the insulating layer is smaller than an orthogonal projection of the optical member onto the insulating layer. 
     
     
       6. The organic light-emitting device according to  claim 5 , further comprising a pixel isolation layer covering an edge of the first lower electrode, wherein the first lower electrode includes a first region in contact with the organic compound layer and a second region in contact with the pixel isolation layer, and
 an orthogonal projection of the first region onto the insulating layer is smaller than the orthogonal projection of the optical member onto the insulating layer, and larger than the orthogonal projection of the first organic compound layer onto the insulating layer. 
 
     
     
       7. The organic light-emitting device according to  claim 6 , wherein the optical member is a lens, and
 in a section perpendicular to the insulating layer, an uppermost point of the lens is positioned between, in a direction parallel to the insulating layer, a midpoint of the first region and a midpoint of the first organic compound layer. 
 
     
     
       8. The organic light-emitting device according to  claim 1 , further comprising a second lower electrode between the insulating layer and the organic compound layer, a first light-reflecting layer between the first lower electrode and the insulating layer, a first transparent insulating layer between the first light-reflecting layer and the first lower electrode,
 a second light-reflecting layer between the second lower electrode and the insulating layer, and a second transparent insulating layer between the second light-reflecting layer and the second lower electrode, 
 the first transparent insulating layer having a thickness different from a thickness of the second transparent insulating layer. 
 
     
     
       9. The organic light-emitting device according to  claim 8 , further comprising a first color filter disposed on the first lower electrode and configured to transmit light of a first emission wavelength, and a second color filter disposed on the second lower electrode and configured to transmit light of a second emission wavelength,
 wherein an optical length between the first light-emitting layer and the first light-reflecting layer is an optical length that causes constructive interference of light of the first emission wavelength, and an optical length between the second light-emitting layer and the second light-reflecting layer is an optical length that causes constructive interference of light of the second emission wavelength. 
 
     
     
       10. The organic light-emitting device according to  claim 1 , further comprising a second lower electrode and a third lower electrode that are adjacent to the first lower electrode and between the first organic compound layer and the insulating layer,
 a first color filter disposed on the first lower electrode and configured to transmit light of a first emission wavelength, a second color filter disposed on the second lower electrode and configured to transmit light of a second emission wavelength, and a third color filter disposed on the third lower electrode and configured to transmit light of a third emission wavelength, wherein the first organic compound layer whose orthogonal projection onto the insulating layer overlaps the first lower electrode is disposed so as to be connected to the first organic compound layer whose orthogonal projection onto the insulating layer overlaps the third lower electrode, and 
 the first organic compound layer whose orthogonal projection onto the insulating layer overlaps the second lower electrode is not connected to the first organic compound layer whose orthogonal projection onto the insulating layer overlaps the first lower electrode. 
 
     
     
       11. The organic light-emitting device according to  claim 1 , wherein a size of each orthogonal projection onto the insulating layer is a length of the corresponding orthogonal projection onto the insulating layer in a section perpendicular to the insulating layer. 
     
     
       12. An organic light-emitting device comprising, on an insulating layer, a first lower electrode, an upper electrode, and an organic compound layer disposed between the first lower electrode and the upper electrode,
 wherein the organic compound layer includes a light-emitting layer, a fourth organic compound layer containing a compound having a lowest unoccupied molecular orbital level energy of −5.0 eV or less, and a fifth organic compound layer having a higher lowest unoccupied molecular orbital level energy than the fourth organic compound layer, and 
 an orthogonal projection of an entirety of the fourth organic compound layer onto the insulating layer is smaller than an orthogonal projection of an entirety of the fifth organic compound layer onto the insulating layer. 
 
     
     
       13. The organic light-emitting device according to  claim 12 , further comprising a second lower electrode between the insulating layer and the organic compound layer, wherein the orthogonal projection of the fifth organic compound layer onto the insulating layer overlaps an orthogonal projection of the second lower electrode onto the insulating layer, and
 the orthogonal projection of the fourth organic compound layer onto the insulating layer does not overlap the orthogonal projection of the second lower electrode onto the insulating layer. 
 
     
     
       14. The organic light-emitting device according to  claim 12 , further comprising a second lower electrode between the insulating layer and the organic compound layer, wherein the fifth organic compound layer whose orthogonal projection onto the insulating layer overlaps the first lower electrode is disposed so as to be connected to the fifth organic compound layer whose orthogonal projection onto the insulating layer overlaps the second lower electrode, and
 the fourth organic compound layer whose orthogonal projection onto the insulating layer overlaps the first lower electrode is not connected to the fourth organic compound layer whose orthogonal projection onto the insulating layer overlaps the second lower electrode. 
 
     
     
       15. The organic light-emitting device according to  claim 12 , further comprising a pixel isolation layer covering an edge of the first lower electrode, wherein the first lower electrode includes a first region in contact with the organic compound layer and a second region in contact with the pixel isolation layer, and
 the orthogonal projection of the fourth organic compound layer onto the insulating layer is smaller than an orthogonal projection of the first region onto the insulating layer. 
 
     
     
       16. The organic light-emitting device according to  claim 12 , further comprising an optical member on the upper electrode,
 wherein the orthogonal projection of the fourth organic compound layer onto the insulating layer is smaller than an orthogonal projection of the optical member onto the insulating layer. 
 
     
     
       17. The organic light-emitting device according to  claim 16 , further comprising a pixel isolation layer covering an edge of the first lower electrode, wherein the first lower electrode includes a first region in contact with the organic compound layer and a second region in contact with the pixel isolation layer, and
 an orthogonal projection of the first region onto the insulating layer is smaller than the orthogonal projection of the optical member onto the insulating layer, and is larger than the orthogonal projection of the fourth organic compound layer onto the insulating layer. 
 
     
     
       18. The organic light-emitting device according to  claim 17 , wherein the optical member is a lens,
 in a section perpendicular to the insulating layer, an uppermost point of the lens is positioned between, in a direction parallel to the insulating layer, a midpoint of the first region and a midpoint of the fourth organic compound layer. 
 
     
     
       19. The organic light-emitting device according to  claim 12 , further comprising a second lower electrode between the insulating layer and the organic compound layer, a first light-reflecting layer between the first lower electrode and the insulating layer, a first transparent insulating layer between the first light-reflecting layer and the first lower electrode,
 a second light-reflecting layer between the second lower electrode and the insulating layer, and a second transparent insulating layer between the second light-reflecting layer and the second lower electrode, 
 the first transparent insulating layer having a thickness different from a thickness of the second transparent insulating layer. 
 
     
     
       20. The organic light-emitting device according to  claim 19 , further comprising a first color filter disposed on the first lower electrode and configured to transmit light of a first emission wavelength, and a second color filter disposed on the second lower electrode and configured to transmit light of a second emission wavelength, wherein an optical length between the first light-emitting layer and the first light-reflecting layer is an optical length that causes constructive interference of light of the first emission wavelength, and an optical length between the second light-emitting layer and the second light-reflecting layer is an optical length that causes constructive interference of light of the second emission wavelength. 
     
     
       21. The organic light-emitting device according to  claim 12 , further comprising a second lower electrode and a third lower electrode that are adjacent to the first lower electrode and between the organic compound layer and the insulating layer,
 a first color filter disposed on the first lower electrode and configured to transmit light of a first emission wavelength, a second color filter disposed on the second lower electrode and configured to transmit light of a second emission wavelength, and a third color filter disposed on the third lower electrode and configured to transmit light of a third emission wavelength, wherein the fourth organic compound layer whose orthogonal projection onto the insulating layer overlaps the first lower electrode is disposed so as to be connected to the fourth organic compound layer whose orthogonal projection onto the insulating layer overlaps the third lower electrode, and 
 the fourth organic compound layer whose orthogonal projection onto the insulating layer overlaps the second lower electrode is not connected to the fourth organic compound layer whose orthogonal projection onto the insulating layer overlaps the first lower electrode. 
 
     
     
       22. The organic light-emitting device according to  claim 12 , wherein a size of each orthogonal projection onto the insulating layer is a length of the corresponding orthogonal projection onto the insulating layer in a section perpendicular to the insulating layer. 
     
     
       23. The organic light-emitting device according to  claim 12 ,
 wherein the device further comprises a second lower electrode adjacent to the first lower electrode, and 
 wherein the light-emitting layer is disposed such that an orthogonal projection onto the insulating layer extends at least from a region overlapping the first lower electrode to a region overlapping the second lower electrode. 
 
     
     
       24. A display apparatus comprising the organic light-emitting device according to  claim 1 , and a signal circuit configured to supply image signals to the organic light-emitting device. 
     
     
       25. A photoelectric conversion apparatus comprising an optical unit including a plurality of lenses, an image pickup element configured to receive light having passed through the optical unit, and a display unit configured to display an image captured by the image pickup element,
 wherein the display unit includes the organic light-emitting device according to  claim 1 . 
 
     
     
       26. An electronic apparatus comprising a display unit including the organic light-emitting device according to  claim 1 , a housing including the display unit, and a communication unit disposed in the housing and configured to communicate with an external device. 
     
     
       27. A display apparatus comprising the organic light-emitting device according to  claim 12 , and a signal circuit configured to supply image signals to the organic light-emitting device. 
     
     
       28. A photoelectric conversion apparatus comprising an optical unit including a plurality of lenses, an image pickup element configured to receive light having passed through the optical unit, and a display unit configured to display an image captured by the image pickup element,
 wherein the display unit includes the organic light-emitting device according to  claim 12 . 
 
     
     
       29. An electronic apparatus comprising a display unit including the organic light-emitting device according to  claim 12 , a housing including the display unit, and a communication unit disposed in the housing and configured to communicate with an external device.